Simply copies your public key to the remote system. For the first time, this will require a password for the user@remote account. From then on, ssh will ask for your private key keyphrase occasionally but you won't need to use the password. Very handy when you're moving files for testing etc.

Place in .bashrc and invoke like this: "mecp /path/to/file", and it will copy the specified file(s) back to the desktop of the host you're ssh'ing in from. To easily upload a file from the host you're ssh'ing in from use this: